<template>
  <div class="app-container">
    <el-form label-width="120px">
      <el-form-item label="头像">
        <!-- 头衔缩略图 -->
        <pan-thumb :image="teacher.avatar"/>
        <!-- 文件上传按钮 -->
        <el-button type="primary" icon="el-icon-upload" @click="imagecropperShow=true">更换头像</el-button>
        <image-cropper
          v-show="imagecropperShow"
          :width="300"
          :height="300"
          :key="imagecropperKey"
          :url="BASE_API+'/eduoss/fileoss/upload'"
          field="file"
          @close="close"
          @crop-upload-success="cropSuccess"/>
      </el-form-item>
      <el-form-item label="讲师名称">
        <el-input v-model="teacher.name"/>
      </el-form-item>
      <el-form-item label="讲师排序">
        <el-input-number v-model="teacher.sort" :min="min" controls-position="right"/>
      </el-form-item>
      <el-form-item label="讲师头衔">
        <el-select v-model="teacher.level" clearable placeholder="请选择">
          <!--
            数据类型一定要和取出的json中的一致，否则没法回填
            因此，这里value使用动态绑定的值，保证其数据类型是number
          -->
          <el-option :value="1" label="高级讲师"/>
          <el-option :value="2" label="首席讲师"/>
        </el-select>
      </el-form-item>
      <el-form-item label="讲师资历">
        <el-input v-model="teacher.career"/>
      </el-form-item>
      <el-form-item label="讲师简介">
        <el-input v-model="teacher.intro" :rows="10" type="textarea"/>
      </el-form-item>
      <!-- 讲师头像：TODO -->
      <el-form-item>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="saveOrUpdate">保存</el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import teacher from "../../../api/teacher/teacher"
import ImageCropper from '@/components/ImageCropper'
import PanThumb from '@/components/PanThumb'

export default {
  name: "Form",
  components: {
    ImageCropper,
    PanThumb
  },
  data() {
    return {
      teacher: {
        name: '',
        sort: 0,
        level: 1,
        career: '',
        intro: '',
        avatar: process.env.OSS_PATH + '/avatar/default.gif'
      },
      saveBtnDisabled: false, // 保存按钮是否禁用,
      editBtnDisabled: false,
      min: 0,
      // 头像上传
      BASE_API: process.env.BASE_API,
      imagecropperShow: false,
      imagecropperKey: 0
    }
  },
  created() {
    if (this.$route.query.id) {
      this.showDetail()
    }
  },
  mounted() {
  },
  methods: {
    saveOrUpdate() {
      if (this.$route.query.id) {
        this.editBtnDisabled = true
        this.editTeacher()
      } else {
        this.saveBtnDisabled = true
        this.saveData()
      }
    },
    // 保存
    saveData() {
      teacher.save(this.teacher).then(response => {
        return this.$message({
          type: 'success',
          message: '保存成功!'
        })
      }).then(resposne => {
        this.$router.push("/teacher/list")
      }).catch((response) => {
        // console.log(response)
        this.$message({
          type: 'error',
          message: '保存失败'
        })
      })
    },
    showDetail() {
      const id = this.$route.query.id
      teacher.detail(id).then(res => {
        const data = res.data.data
        this.teacher = {
          name: data.name,
          sort: data.sort,
          level: data.level,
          career: data.career,
          intro: data.intro,
          avatar: data.avatar
        }
      })
    },
    editTeacher() {
      const t = this.teacher
      t.id = this.$route.query.id
      // alert(JSON.stringify(t))
      teacher.edit(t).then(
        this.$router.push("/teacher/list")
      )
    },
    // 头像上传
    // 上传成功后的回调函数
    cropSuccess(data) {
      console.log(data)
      this.imagecropperShow = false
      this.teacher.avatar = data.url
      // 上传成功后，重新打开上传组件时初始化组件，否则显示上一次的上传结果
      this.imagecropperKey = this.imagecropperKey + 1
    },
    // 关闭上传组件
    close() {
      this.imagecropperShow = false
      // 上传失败后，重新打开上传组件时初始化组件，否则显示上一次的上传结果
      this.imagecropperKey = this.imagecropperKey + 1
    }
  },
  beforeRouteLeave(to, from, next) {
    this.teacher = {}
    next()
  }
}
</script>

<style scoped>

</style>
